Main Components of a PLC System: Complete Guide for Engineers
Master PLC system components: CPU, power supply, I/O modules, communication interfaces, and software with sizing formulas and selection tips. Shop at Stoklink.
The Siemens 6ES7138-7EC00-0AA0 is a SIMATIC ET 200iSP power supply module rated 120/230 V AC, feeding the backplane and power bus of an intrinsically safe distributed I/O station with redundancy capability and a 20 ms buffering time. It accepts 85-264 V AC at 47-63 Hz, carries an IP30 rating, and is certified Ex db eb [ib] IIC T4 Gb for Zone 1 gas areas.
Redundancy capability lets two of these modules feed one ET 200iSP station in parallel, so pick this over a non-redundant supply when the power bus must stay live through a single-supply fault or a maintenance swap. The 20 ms buffering across the backplane bus, powerbus, and IM 152 CPU means AC interruptions shorter than 20 ms do not reset the station. Its 85-264 V AC input range covers both 120 V and 230 V distribution from one catalog number, so no separate model is needed per mains voltage.
| Product type designation | PS 120/230 V AC |
|---|---|
| Redundancy: Redundancy capability | Yes |
| Type of supply voltage | AC |
|---|---|
| Rated value (AC) | 230 V; 120/230 V AC |
| permissible range, lower limit (AC) | 85 V |
| permissible range, upper limit (AC) | 264 V |
| external protection for power supply lines (recommendation) | protection with 6 A miniature circuit breaker and tripping characteristic C (per ET 200iSP station) |
| Line frequency: permissible range, lower limit | 47 Hz |
| Line frequency: permissible range, upper limit | 63 Hz |
| Mains buffering: bridging time for backplane bus, min. | 20 ms |
| Mains buffering: buffering time for powerbus, min. | 20 ms |
| Mains buffering: buffering time for IM 152 CPU, min. | 20 ms |
| Inrush current, max. | 28 A; at 120/230 V AC |
|---|---|
| from supply voltage L1, max. | 1.04 A; at rated voltage 230 VAC:0.45A at rated voltage 120 VAC:0.75A |
| At 50 Hz AC, max. | 1.04 A |
| At 60 Hz AC, max. | 1.04 A |
| Part number | 6ES7138-7EC00-0AA0 |
|---|---|
| Type designation | PS 120/230 V AC |
| Brand | Siemens |
| Condition | New, factory sealed |
| Source | Siemens and its authorised distributors |
| Warranty | Manufacturer warranty |
| Lifecycle status | Active, in production |
| EAN | 4019169181433 |
| ETIM class | EC002583 |
| eCl@ss | 27242611 |
| Power loss, typ. | 5 W; 5 W + 1.2 x total power loss of the electronics modules |
|---|---|
| Power loss, max. | 21.3 W |
| Status indicator | Yes |
|---|---|
| Alarms | No |
| Diagnoses: Diagnostic information readable | Yes; via IM 152 |
| Diagnostics indication LED: Group error SF (red) | No |
| maximum values for connecting terminals for gas group IIC: Um (voltage at non-intrinsically safe connecting terminals), max. | 264 V; for more AC/DC information, see certificate IECEx KEM 09.0070 |
|---|
| primary/secondary | Yes |
|---|---|
| between supply voltage and electronics | No |
| IP degree of protection | IP30 |
|---|
| CE mark | CE 0344 |
|---|---|
| UKCA mark | DEKRA 21UKEX0033 Importer UK: Siemens plc Manchester M20 2UR |
| cULus | LISTED E334384 |
| FM approval | CLASSIFIED 3025852 |
| BIS | Yes |
| Suitable for safety functions | Yes |
| INMETRO certificate | UL-BR 12.0066 |
| reference designation according to IEC 81346-2 (2009) | K |
| Use in hazardous areas: ATEX marking | II 2 G Ex db eb [ib] IIC T4 Gb I M2 Ex db eb [ib] I Mb |
| Use in hazardous areas: ATEX certificate | KEMA 09 ATEX 0156 |
| Use in hazardous areas: IECEx | IECEx KEM 09.0070 |
| Use in hazardous areas: CCC Ex | 2020322303002989 |
| Use in hazardous areas: EAC Ex | 1Ex d e [ib] IIC T4 Gb PII Ex d e [ib Mb] I Mc |
| Use in hazardous areas: FM marking | Class I, Zone 1 AEx d e [ib] IIC T4 NI, Class I, DIV.2, GP. A,B,C,D T4 DIP, Class II, III, GP. E,F,G |
| Use in hazardous areas: Explosion protection category for gas | ATEX gas explosion protection, Zone 1 |
| Use in hazardous areas: Explosion protection category for dust | ATEX dust explosion protection, Zone 21 always install in corresponding enclosure |
| Use in hazardous areas: associated equipment (Ex ia) | No |
| Use in hazardous areas: associated equipment (Ex ib) | Yes |
| Marine approval: Germanischer Lloyd (GL) | Yes |
| Marine approval: American Bureau of Shipping (ABS) | Yes |
| Marine approval: Bureau Veritas (BV) | Yes |
| Marine approval: Det Norske Veritas (DNV) | Yes |
| Ambient temperature during operation: min. | -20 °C |
|---|---|
| Ambient temperature during operation: max. | 70 °C |
| Width | 60 mm |
|---|---|
| Height | 190 mm |
| Depth | 136.5 mm |
| Weight, approx. | 2 700 g |
|---|
| Net weight | 3.052 kg |
|---|---|
| Country of origin | DE |
| Shipping weight | 3.552 kg |
| Ships from | Türkiye |
| Dispatch | — |
| Stock | On request |
Source: manufacturer data · Last verified: 01 Nov 2026
No documents are on file for this part yet.
Ask us for the datasheetThe rated current of PS 120/230 V AC is 1.04 A.
The rated operational voltage of PS 120/230 V AC is 85–264 V AC.
The tariff (HS) code on file for PS 120/230 V AC is 85043180.
The EAN (GTIN) of PS 120/230 V AC is 4019169181433.
PS 120/230 V AC ships from Türkiye. Shipping calculated at checkout · import duties and taxes paid on arrival.
Master PLC system components: CPU, power supply, I/O modules, communication interfaces, and software with sizing formulas and selection tips. Shop at Stoklink.